hey david,
for us to debug the issue it would be helpful to access your site, therefore you might want to enter your site details here.
having that said by just checking your community frontpage it shows that the main easysocial javascript file is missing (404 not found), this may already be the root issue. you can try to re-install 1.3.15 and make sure that the javascript files are in place.
hope that helps and have a nice day